{"common":{"save":0,"post_id":"8256","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"9488","post_id":"8256","mon_id":"1159533","chapter_id":"1159673","question":"<p>\u1ede \u0111\u1eadu hà lan, ti\u1ebfn hành lai gi\u1eefa các cá th\u1ec3 thu\u1ea7n ch\u1ee7ng h\u1ea1t tr\u01a1n v\u1edbi h\u1ea1t nh\u0103n. Tính tr\u1ea1ng tr\u1ed9i là h\u1ea1t tr\u01a1n thì ki\u1ec3u hình \u1edf F1 là:<\/p>","options":["<strong>A. <\/strong>100% h\u1ea1t tr\u01a1n","<strong>B.<\/strong> 100% h\u1ea1t nh\u0103n","<strong>C.<\/strong> 50% h\u1ea1t tr\u01a1n và 50% h\u1ea1t nh\u0103n","<strong>D.<\/strong> 3 h\u1ea1t tr\u01a1n : 1 h\u1ea1t nh\u0103n"],"correct":"1","level":"2","hint":"<p>Khi th\u1ef1c hi\u1ec7n lai gi\u1eefa các cá th\u1ec3 thu\u1ea7n ch\u1ee7ng khác bi\u1ec7t v\u1ec1 m\u1ed9t c\u1eb7p tính tr\u1ea1ng \u0111\u1ed1i l\u1eadp (h\u1ea1t tr\u01a1n và h\u1ea1t nh\u0103n) mà tính tr\u1ea1ng tr\u01a1n là tr\u1ed9i hoàn toàn, ki\u1ec3u hình F1 s\u1ebd bi\u1ec3u hi\u1ec7n tính tr\u1ea1ng tr\u1ed9i. \u0110i\u1ec1u này tuân theo \u0111\u1ecbnh lu\u1eadt di truy\u1ec1n c\u1ee7a Mendel.<\/p>","answer":"<p>\u0110áp án \u0111úng: <span style=\"color:#16a085;\"><strong>A. 100% h\u1ea1t tr\u01a1n<\/strong><\/span><\/p><p>- Theo \u0111\u1ec1 bài, <strong>h\u1ea1t tr\u01a1n<\/strong> là tính tr\u1ea1ng tr\u1ed9i và <strong>h\u1ea1t nh\u0103n<\/strong> là tính tr\u1ea1ng l\u1eb7n.<\/p><p>+ Lai gi\u1eefa hai cá th\u1ec3 thu\u1ea7n ch\u1ee7ng:<\/p><p>+ H\u1ea1t tr\u01a1n thu\u1ea7n ch\u1ee7ng có ki\u1ec3u gen là <strong>TT<\/strong>.<\/p><p>+ H\u1ea1t nh\u0103n thu\u1ea7n ch\u1ee7ng có ki\u1ec3u gen là <strong>tt<\/strong>.<\/p><p>- Quá trình lai:<\/p><p>+ F1 s\u1ebd nh\u1eadn 1 alen t\u1eeb b\u1ed1 (T) và 1 alen t\u1eeb m\u1eb9 (t), d\u1eabn \u0111\u1ebfn ki\u1ec3u gen c\u1ee7a t\u1ea5t c\u1ea3 các cá th\u1ec3 F1 là <strong>Tt<\/strong>.<\/p><p>+ Vì alen T tr\u1ed9i hoàn toàn, ki\u1ec3u gen <strong>Tt<\/strong> bi\u1ec3u hi\u1ec7n ki\u1ec3u hình tr\u1ed9i, t\u1ee9c là h\u1ea1t tr\u01a1n.<\/p><p>+ Do \u0111ó, 100% cá th\u1ec3 F1 có ki\u1ec3u hình là <strong>h\u1ea1t tr\u01a1n<\/strong>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-12-31 15:45:55","option_type":"txt","len":2},{"id":"9490","post_id":"8256","mon_id":"1159533","chapter_id":"1159673","question":"<p>Trong thí nghi\u1ec7m lai m\u1ed9t c\u1eb7p tính tr\u1ea1ng, tính tr\u1ea1ng tr\u1ed9i bi\u1ec3u hi\u1ec7n \u1edf:<\/p>","options":["<strong>A. <\/strong>Fn","<strong>B. <\/strong>F3","<strong>C. <\/strong>F2","<strong>D. <\/strong>F1"],"correct":"4","level":"2","hint":"<p>Trong thí nghi\u1ec7m lai m\u1ed9t c\u1eb7p tính tr\u1ea1ng c\u1ee7a Men\u0111en, th\u1ebf h\u1ec7 nào bi\u1ec3u hi\u1ec7n tính tr\u1ea1ng tr\u1ed9i s\u1ebd ph\u1ee5 thu\u1ed9c vào quy lu\u1eadt di truy\u1ec1n. Hãy xem xét quy lu\u1eadt phân li, \u0111\u1eb7c bi\u1ec7t \u1edf các th\u1ebf h\u1ec7 lai khác nhau (F1, F2, Fn), \u0111\u1ec3 xác \u0111\u1ecbnh th\u1eddi \u0111i\u1ec3m tính tr\u1ea1ng tr\u1ed9i \u0111\u01b0\u1ee3c bi\u1ec3u hi\u1ec7n rõ nh\u1ea5t.<\/p>","answer":"<p>\u0110áp án \u0111úng: <span style=\"color:#16a085;\"><strong>D. F1<\/strong><\/span><\/p><p>Trong thí nghi\u1ec7m c\u1ee7a Men\u0111en v\u1ec1 lai m\u1ed9t c\u1eb7p tính tr\u1ea1ng:<\/p><p>- Khi lai hai c\u01a1 th\u1ec3 thu\u1ea7n ch\u1ee7ng khác nhau v\u1ec1 m\u1ed9t c\u1eb7p tính tr\u1ea1ng \u0111\u1ed1i l\u1eadp, th\u1ebf h\u1ec7 con lai (F1) ch\u1ec9 bi\u1ec3u hi\u1ec7n m\u1ed9t trong hai tính tr\u1ea1ng c\u1ee7a b\u1ed1 m\u1eb9. Tính tr\u1ea1ng này \u0111\u01b0\u1ee3c g\u1ecdi là tính tr\u1ea1ng tr\u1ed9i.<\/p><p>- \u1ede F1, t\u1ea5t c\u1ea3 các cá th\u1ec3 \u0111\u1ec1u mang ki\u1ec3u hình c\u1ee7a tính tr\u1ea1ng tr\u1ed9i do t\u1ed5 h\u1ee3p gen d\u1ecb h\u1ee3p (Aa).<\/p><p>Do \u0111ó, tính tr\u1ea1ng tr\u1ed9i \u0111\u01b0\u1ee3c bi\u1ec3u hi\u1ec7n rõ nh\u1ea5t \u1edf th\u1ebf h\u1ec7 <strong>F1<\/strong>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-12-31 15:49:07","option_type":"txt","len":0},{"id":"9494","post_id":"8256","mon_id":"1159533","chapter_id":"1159673","question":"<p>Theo lý thuy\u1ebft, phép lai nào sau \u0111ây cho \u0111\u1eddi con có nhi\u1ec1u ki\u1ec3u gene nh\u1ea5t?<\/p>","options":["<strong>A.<\/strong> AaBb × Aabb","<strong>B. <\/strong>AABb × AaBB","<strong>C.<\/strong> AaBB × aabb","<strong>D. <\/strong>AABB × Aabb"],"correct":"1","level":"2","hint":"<p>\u0110\u1ec3 xác \u0111\u1ecbnh phép lai cho \u0111\u1eddi con có nhi\u1ec1u ki\u1ec3u gene nh\u1ea5t, ta c\u1ea7n xem xét s\u1ed1 l\u01b0\u1ee3ng alen khác nhau mà m\u1ed7i b\u1ed1 m\u1eb9 có th\u1ec3 \u0111óng góp và s\u1ed1 t\u1ed5 h\u1ee3p có th\u1ec3 x\u1ea3y ra trong \u0111\u1eddi con. S\u1ed1 ki\u1ec3u gene \u0111\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh b\u1edfi s\u1ed1 l\u01b0\u1ee3ng t\u1ed5 h\u1ee3p alen khác nhau t\u1eeb b\u1ed1 và m\u1eb9. Phép lai nào có c\u1ea3 b\u1ed1 và m\u1eb9 mang nhi\u1ec1u alen d\u1ecb h\u1ee3p thì s\u1ebd t\u1ea1o ra nhi\u1ec1u ki\u1ec3u gene h\u01a1n.<\/p>","answer":"<p>\u0110áp án \u0111úng: <span style=\"color:#16a085;\"><strong>A. AaBb × Aabb<\/strong><\/span><\/p><p><span style=\"color:#16a085;\"><\/span><strong>AaBb × Aabb<\/strong>:<\/p><p>- B\u1ed1: <strong>AaBb<\/strong> → 4 lo\u1ea1i giao t\u1eed (<strong>AB, Ab, aB, ab<\/strong>).<\/p><p>- M\u1eb9: <strong>Aabb<\/strong> → 2 lo\u1ea1i giao t\u1eed (<strong>Ab, ab<\/strong>).<\/p><p>- \u0110\u1eddi con: 4 × 2 = 8 ki\u1ec3u gene.<\/p><p>- Các phép lai khác có ít c\u1eb7p alen d\u1ecb h\u1ee3p h\u01a1n, t\u1ea1o ra ít ki\u1ec3u gene h\u01a1n.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-12-31 15:53:02","option_type":"txt","len":2}]}